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Analyse théorique et expérimentale d'une pompe à chaleur à sorption au NH3-CaCl2 à composite à base de graphite-fibres de carbone.

Theoretical and experimental analysis NH3-CaCl2 sorption heat pump filled with graphite-carbon fiber composite.

Numéro : pap. ID: 763

Auteurs : ZAJACZKOWSKI B.

Résumé

Based on the results of thermodynamic analysis of a sorption heat pump, we have built and tested experimental intermittent ammonia – calcium chloride system. The adsorber was filled with new graphite – carbon fiber sorption composite. The mass ratio between calcium chloride and inert components was 0.75. Experimentally measured heat transfer coefficient of the composite was about 13-14 W/mK. Using the principles of DoE (Design of Experiment), we have analyzed the behavior of a heat pump during each phase of the sorption cycle and obtained the COPHP of the system. Each phase of the sorption cycle has been analyzed separately – before the next phase, the device was allowed to balance thermally. Although, influenced by the mass of construction elements, the highest obtained efficiency was 0.965 (for calculated theoretical value 1.131).

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Pages : 8 p.

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Détails

  • Titre original : Theoretical and experimental analysis NH3-CaCl2 sorption heat pump filled with graphite-carbon fiber composite.
  • Identifiant de la fiche : 30002197
  • Langues : Anglais
  • Source : Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
  • Date d'édition : 21/08/2011

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